CN209292901U - A kind of steel reinforced concrete combination beam of weldless connection part - Google Patents
A kind of steel reinforced concrete combination beam of weldless connection part Download PDFInfo
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- CN209292901U CN209292901U CN201822009891.3U CN201822009891U CN209292901U CN 209292901 U CN209292901 U CN 209292901U CN 201822009891 U CN201822009891 U CN 201822009891U CN 209292901 U CN209292901 U CN 209292901U
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Abstract
The utility model discloses a kind of steel reinforced concrete combination beams of weldless connection part, the steel reinforced concrete combination beam includes multiple bridge subsections, the bridge subsection includes steel beam structure, steel mesh mechanism and the UHPC floorings being set on the steel beam structure, the steel beam structure includes bottom plate, top plate and web, the two sides up and down of girder steel top plate are arranged in the steel mesh mechanism, and the vertical lacing wire by passing through girder steel top plate is connected, the girder steel top plate, steel mesh mechanism and vertical lacing wire are coated on inside UHPC floorings.The utility model transmits the shearing between floorings and girder steel top plate by vertical lacing wire, without welding shear connector in top plate, simplifies construction, is conducive to environmental protection.
Description
Technical field
The utility model belongs to technical field of bridge construction, combines more particularly, to a kind of steel reinforced concrete of weldless connection part
Beam.
Background technique
Girder steel is a kind of high performance building materials, and strengths in tension and compression is higher, and the compression strength of concrete is much larger than
Its tensile strength, and cost is lower than girder steel, concrete slab is arranged at the top of girder steel, passes through shearing for steel-concrete combination beam
Part links together concrete slab and girder steel common stress.Same section inner concrete floorings are pressurized, girder steel tension,
The material property of concrete and girder steel can be given full play to, mechanical property is preferable.
Concrete slab is connected by traditional combination beam by shear key with girder steel, and the effect of shear key is transmitting coagulation
The shearing of soil and girder steel interface, common shear key have peg, PBL shear key, fashioned iron shear key, and above-mentioned shear key is welding
On girder steel top plate, in Transducers Embedded in Concrete, Transfer of Shear is played and resists that power is started between concrete and girder steel.Shear key quantity
More, welding workload is big, and quality is often difficult to ensure, and is unfavorable for environmental protection.
Traditional steel reinforced concrete combined bridge, floorings use normal concrete, and the strength of materials is far below steel strength, causes
Concrete bridge deck plate thickness is larger, increases dead load；There are coarse aggregates for conventional concrete, and poor fluidity, floorings can not
It is made into the structure type of package girder steel, to improve the durability of girder steel；Traditional steel reinforced concrete composite beam bridge panel is located at girder steel top plate
Upper surface top, the shear key Transfer of Shear between concrete slab bottom, compression of concrete slab at the top of girder steel
Unevenly.
Utility model content
The technical problem to be solved by the utility model is in view of the deficiency of the prior art, provide a kind of solderless
The steel reinforced concrete combination beam of connecting connector, simple structure and reasonable design and effect is good, without welding shear connector, letter in top plate
Change construction, and the durability of bridge is good, uniform force, it is practical.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of steel reinforced concrete of weldless connection part
Combination beam, it is characterised in that: including multiple bridge subsections laid from front to back along bridge longitudinal extent direction, Duo Gesuo
The structure for stating bridge subsection is all the same, and each bridge subsection includes the girder steel knot being laid on institute's construction bridges bridge pier
It structure, the steel mesh mechanism being arranged on the steel beam structure and is set on the steel beam structure and the steel mesh mechanism
UHPC floorings；
The steel beam structure includes bottom plate, top plate and the web being connected between bottom plate and top plate, the steel mesh mechanism
It is arranged on top plate, the steel mesh mechanism and top plate are coated on inside the UHPC floorings, steel mesh mechanism packet
Include the upper steel mesh mechanism for being symmetricly set on top plate or more and lower steel mesh mechanism and be connected to the upper steel mesh mechanism and
Vertical lacing wire between the lower steel mesh mechanism, the upper steel mesh mechanism include a upper steel mesh, the lower steel mesh
Mechanism includes two lower steel meshes for being symmetricly set on web two sides, is hooked between the upper steel mesh and lower steel mesh vertical
The top bending of lacing wire, the vertical lacing wire is fixedly connected with upper steel mesh, lower part bending and the lower reinforcing bar of the vertical lacing wire
Net is fixedly connected, and is fixedly connected between two lower steel meshes by transverse direction lacing wire, is provided on the top plate and is drawn for vertical
Muscle perforative vertical mounting hole is provided with for the perforative lateral mounting hole of lateral lacing wire on the web.
The steel reinforced concrete combination beam of above-mentioned a kind of weldless connection part, it is characterised in that: the quantity of the vertical mounting hole is
It is multiple, multiple vertical mounting hole layings triangular in shape.
The steel reinforced concrete combination beam of above-mentioned a kind of weldless connection part, it is characterised in that: the upper steel mesh and lower steel mesh
It include that multiple rows of transverse steel equidistantly laid and multiple row are equidistantly laid in the longitudinal reinforcement on the transverse steel, it is adjacent
The spacing between spacing and the two neighboring longitudinal reinforcement between two transverse steels is 8cm~20cm.
The steel reinforced concrete combination beam of above-mentioned a kind of weldless connection part, it is characterised in that: the vertical mounting hole is ellipse
The long axis direction in hole, the slotted eye is laid along the length direction of top plate, and the long axis of the slotted eye is greater than described vertical
Wider direction length after lacing wire crotch.
The steel reinforced concrete combination beam of above-mentioned a kind of weldless connection part, it is characterised in that: the upper surface of the top plate and upper steel
Cushion block is provided between muscle net.
A kind of steel reinforced concrete combination beam of above-mentioned weldless connection part, it is characterised in that: the lateral mounting hole is round hole,
The diameter of the round hole is greater than the diameter of the lateral lacing wire.
Compared with the prior art, the utility model has the following advantages:
1, the steel reinforced concrete combined beam structure of used weldless connection part designs reasonable and easy construction, investment construction cost
It is lower.
2, the welded connections of steel reinforced concrete composite beam bridge is omitted in the utility model, and the lacing wire of top plate is passed through in steel mesh mechanism
And the UHPC material of package lacing wire plays the role of shear connector, takes full advantage of the high intensity of UHPC material, cancels weldering
Connecing link makes architecture quality more secure, and is good for the environment, and economy is more excellent.
3, the impermeability of UHPC material is better than common concrete material, girder steel top plate package in used UHPC floorings
In UHPC material internal, top plate steel corrosion can be effectively prevented, improve the durability of bridge.
4, the steel reinforced concrete combination beam of used weldless connection part includes the girder steel knot being laid on institute's construction bridges bridge pier
It structure, the steel mesh mechanism being arranged on the steel beam structure and is paved on the steel beam structure and the steel mesh mechanism
UHPC floorings can spread UHPC by steel mesh mechanism by steel-beam mechanism, the combination of steel mesh mechanism and UHPC floorings
The load of bridge floor plate surface makes UHPC floorings stress more evenly, and steel mesh can prevent the cracking of UHPC floorings, improve bridge
The quality and service life of beam.
5, traditional steel reinforced concrete combination beam, concrete slab are only located at girder steel top plate top, girder steel and concrete slab
Power transmission be by being welded in the shear connector of girder steel cover top surface for Shear transfer to concrete slab bottom；And this
The shear connector of utility model is located at the middle part of UHPC floorings, girder steel top plate directly by the middle part of Shear transfer to floorings,
Floorings stress is more evenly.
6, used steel mesh mechanism structure is simple, processing and fabricating and simple installation, is quick installed at the top of top plate
And lower part, upper layer and lower layer steel mesh with it is close at the upper and lower surface of UHPC floorings, can be effectively prevented UHPC floorings cracking,
Improve the anti-bending bearing capacity of UHPC floorings.
7, the far super normal concrete of UHPC material property in used UHPC floorings, mechanical property and girder steel are more
Close, UHPC floorings and girder steel form combination beam, dead load can be made to mitigate, while bearing power increase.
In conclusion the utility model simple structure and reasonable design and effect is good, without welding Shear connection in top plate
Part simplifies construction, and the durability of bridge is good, uniform force, practical.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the steel reinforced concrete combination beam of the utility model weldless connection part.
Fig. 2 is the structural schematic diagram of the utility model steel steel beam structure.
Fig. 3 is the A-A cross-sectional view of Fig. 1.
Fig. 4 is the B-B cross-sectional view of Fig. 1.
Fig. 5 is the flow diagram of the construction method of the steel reinforced concrete combination beam of the utility model weldless connection part.
Description of symbols:
1-top plate；2-webs；3-bottom plates；
4-upper steel meshes；5-lower steel meshes；6-vertical lacing wires；
7-lateral lacing wires；8-UHPC floorings；9-vertical mounting holes；
10-lateral mounting holes；11-end templates；12-side templates；
13-template temporary supports.
Specific embodiment
A kind of steel reinforced concrete combination beam of weldless connection part as shown in Figures 1 to 4, including multiple longitudinally extend along bridge grow
The bridge subsection that degree direction is laid from front to back, the structure of multiple bridge subsections is all the same, and each bridge subsection is equal
Steel beam structure including being laid on construction bridges bridge pier, the steel mesh mechanism and setting being arranged on the steel beam structure
UHPC floorings 8 on the steel beam structure and the steel mesh mechanism；
The steel beam structure includes bottom plate 3, top plate 1 and the web 2 being connected between bottom plate 3 and top plate 1, the steel mesh
Mechanism is arranged on top plate 1, and the steel mesh mechanism and top plate 1 all extend in the UHPC floorings 8, the steel mesh machine
Structure includes being symmetricly set on the upper steel mesh mechanism of about 1 top plate and lower steel mesh mechanism and being connected to the upper steel mesh machine
Vertical lacing wire 6 between structure and the lower steel mesh mechanism, the upper steel mesh mechanism includes a upper steel mesh 4, under described
Steel mesh mechanism includes two lower steel meshes 5 for being symmetricly set on 2 two sides of web, between the upper steel mesh 4 and lower steel mesh 5
It is hooked with vertical lacing wire 6, the top bending of the vertical lacing wire 6 is fixedly connected with upper steel mesh 4, under the vertical lacing wire 6
Portion's bending is fixedly connected with lower steel mesh 5, is fixedly connected between two lower steel meshes 5 by lateral lacing wire 7, the top plate
It is provided on 1 and supplies the perforative vertical mounting hole 9 of vertical lacing wire 6, be provided on the web 2 for the perforative transverse direction of lateral lacing wire 7
Mounting hole 10.
In the present embodiment, the quantity of the vertical mounting hole 9 is multiple, multiple vertical mounting holes 9 cloth triangular in shape
If.
In the present embodiment, the upper steel mesh 4 and lower steel mesh 5 include multiple rows of transverse steel equidistantly laid and more
Arrange the longitudinal reinforcement being equidistantly laid on the transverse steel, the spacing and adjacent two between the two neighboring transverse steel
Spacing between a longitudinal reinforcement is 8cm~20cm.
In the present embodiment, the vertical mounting hole 9 is slotted eye, and the long axis direction of the slotted eye is along top plate 1
Length direction is laid, and the long axis of the slotted eye is greater than wider direction length after vertical 6 crotch of lacing wire.
In the present embodiment, cushion block is provided between the upper surface and upper steel mesh 5 of the top plate 1.
In the present embodiment, the lateral mounting hole 10 is round hole, and the diameter of the round hole is greater than the lateral lacing wire 7
Diameter.
In the present embodiment, to the method that a kind of steel reinforced concrete combination beam of weldless connection part is constructed, longitudinally prolong along bridge
Stretch direction divides multiple bridge subsections to construct institute's construction bridges from front to back, and the construction method of multiple bridge subsections is equal
It is identical, wherein as follows the work progress of any one bridge subsection:
Step 1: the installation of steel beam structure:
Step 101 installs multiple steel beam structures on current two neighboring bridge pier from left to right；
Step 102 is installed end template 11 in the steel beam structure, and is pacified at 11 both ends of end template below top plate 1
Fill side template 12；Wherein, the lateral length of the end template 11 is greater than the lateral length of multiple steel beam structures, the bed die
Multiple template temporary support 13 is arranged in the bottom of plate 11；
Step 2: the installation of steel mesh mechanism: installing the method for the steel mesh mechanism on multiple steel beam structures
All the same, the steel mesh mechanism is installed on any one described steel-beam mechanism, and detailed process is as follows:
The installation of step 201, lower steel mesh mechanism:
Step 2011 equidistantly lays multiple lower cushion blocks on the end template 11 for being located at 2 two sides of web；
Step 2012, installed respectively on the lower cushion block of 2 two sides of web under steel mesh 5, and lower steel mesh 5 and top plate
1 parallel laying；Wherein, the quantity of the lower steel mesh 5 is two, and the lower steel mesh 5 extends the top plate 1；
Two lower steel meshes 5 are fixedly connected close to one end of the web 2 by lateral lacing wire 7 by step 2013；
Wherein, the lateral lacing wire 7 passes through web 2；
The installation of step 202, upper steel mesh mechanism:
Step 2021 equidistantly lays multiple upper cushion blocks on the top plate 1；
Step 2022 lays upper steel mesh 4 at the top of the upper cushion block, and the upper steel mesh 4 is parallel with the top plate 1
It lays；Wherein, the upper steel mesh 4 extends the top plate 1；
Step 203, binding and fixing:
Vertical lacing wire 6 is passed through vertical mounting hole 9 by step 2031, and the upper end of vertical lacing wire 6 is hooked on upper steel mesh 4
On, the lower end of vertical lacing wire 6 is hooked on lower steel mesh 5, is fixedly connected with steel mesh 4, top plate 1 with lower steel mesh 5；
Step 2032, disassembly lower cushion block；
Step 201 is repeated several times to step 203 in step 204, completes the steel mesh mechanism on multiple steel beam structures
Installation；
Step 3: the formation of UHPC floorings:
Step 301 pours UHPC concrete in the end template 11, top plate 1 and the steel mesh mechanism；
Step 302, temperature be 20 degree, relative humidity for 90% or more wet environment in the UHPC concrete poured
It is conserved, forms UHPC floorings 8；Wherein, the apical side height of the UHPC floorings 8 is higher than the height of the vertical lacing wire 6
Degree；
Step 303, the disassembly end template 11, template temporary support 13 and side template 12；
Step 4: step 1 is repeated several times to step 3, until completing whole work progress of institute's construction bridges.
In the present embodiment, before carrying out the steel beam structure installation in a step 101, the construction of bridge pier is first carried out,
And the setting support between the two neighboring bridge pier, the bridge pier is along bridge longitudinal length cloth from front to back
If.
In the present embodiment, before the steel mesh mechanism installation is carried out in step 2, by multiple rows of cross equidistantly laid
The longitudinal reinforcement being equidistantly laid on the transverse steel to reinforcing bar and multiple row is bound, and multiple upper 4 Hes of steel mesh are formed
Lower steel mesh 5；Wherein, the spacing between the two neighboring transverse steel and the spacing between the two neighboring longitudinal reinforcement
It is 8cm~20cm.
In the present embodiment, the spacing between lower steel mesh 5 and the end template 11 described in step 2012 is 1cm~2cm；
Spacing between upper 8 top surface of steel mesh 4 and UHPC floorings described in step 2022 is 1cm~3cm
UHPC floorings described in step 302 8 with a thickness of 15cm~20cm.
In the present embodiment, UHPC floorings 8 use the UHPC i.e. compression strength of ultra-high performance concrete up to 150MPa with
On, up to 8MPa~10MPa, the intensity of UHPC is free of coarse aggregate in UHPC far more than conventional concrete for the tensile strength of UHPC,
The aggregate size of UHPC is reduced to grade by the Centimeter Level of conventional concrete, has good mobility, it can be achieved that Self-leveling, and
With good impermeability；It is high additionally, due to the intensity of UHPC, it is small with the performance difference of girder steel, compared to conventional concrete,
It is more advantageous that UHPC with steel combines stress.Since UHPC material property is far more than normal concrete, can make full use of
The excellent performance of UHPC material innovates traditional steel-concrete combination beam structure type.
In the present embodiment, setting UHPC floorings 8 are UHPC floorings, can be effectively subtracted because UHPC has high intensity
Foot bridge plate thickness lowers dead load, can transmit the shearing between girder steel top plate and floorings jointly with lacing wire；UHPC tool
There is good self-leveling energy, can adequately fill up between girder steel top plate and steel mesh and the gap of girder steel aperture, is conducive to apply
Work；UHPC material impermeability is good, and UHPC (i.e. ultra-high performance concrete) wraps up girder steel top plate as floorings, and girder steel can be improved
Durability.
In the present embodiment, be arranged the spacing between the two neighboring transverse steel and the two neighboring longitudinal reinforcement it
Between spacing be 8cm~20cm, be because if steel mesh spacing be less than 8cm, be on the one hand unfavorable for pouring for UHPC, hold
Easily the concrete above and below steel mesh is divided into two layers, is not effective to ensure that the cohesive force of concrete and rebar net；On the other hand
It is unfavorable for concrete and effectively enters vertical mounting hole 9, effectively cannot forms earth pillar with vertical lacing wire 6, reduce shearing
Transmitting；If the spacing between spacing and the two neighboring longitudinal reinforcement between the two neighboring transverse steel is greater than
20cm cannot effectively be combined with the concrete poured, not can be effectively carried out cracking resistance and bending resistance, can not be steel mesh
Suffered tensile strength effectively passes to concrete, and the service life of bridge is shorter.
In the present embodiment, it is slotted eye that vertical mounting hole 9, which is arranged, and the long axis length direction of the slotted eye is along top plate
1 length direction is laid, and first is and to make steel mesh 4, top because convenient for may pass through the mounting hole after vertical 6 crotch of lacing wire
Plate 1 is fixedly connected with lower steel mesh 5；Second be because the slotted eye long axis direction it is consistent with the shearing direction of bridge,
Reinforced Concrete Short Column is formd across the UHPC of elliptical opening and lacing wire, plays the role of shear connector, uses simultaneously
Elliptical shape can increase the shear(ing) area of deck paving of concrete floorings and girder steel top plate and biography cuts area.
In the present embodiment, the vertical mounting hole 9 laying triangular in shape, the side size range of the triangle be 15cm~
30cm。
In the present embodiment, the vertical laying triangular in shape of mounting hole 9, can be to avoid certain to top plate 1 compared with rectangular arranged
One vertical and horizontal section weakens excessively, causes the sectional area of top plate 1 small, to cause effect of prestressed poor.
In the present embodiment, if the side length of the triangle is less than 15cm, the spacing of vertical lacing wire 6 is smaller, increases perpendicular
It is great in constructing amount to the installation of lacing wire 6；In addition, aperture can excessively reduce the forced area of top plate 1,1 bending resistance effect of top plate is poor；
If the side length of the triangle is greater than 30cm, the spacing of vertical lacing wire 6 is larger, and the shearing that multiple vertical lacing wires 6 are subject to is uneven
It is even, it be easy to cause the vertical lacing wire 6 in part to be broken；In addition, the spacing of vertical lacing wire 6 needs thicker UHPC floorings 8 just when big
It can make steel mesh 4 and lower 5 stress of steel mesh.
In the present embodiment, the upper cushion block is set, first is because of preset clearance between upper steel mesh 4 and top plate 1；The
Two, it is the adjustment in order to meet the gap between upper steel mesh 4 and top plate 1；Third is in order in fixed upper 4 position of steel mesh
While, the fixation to lower 5 position of steel mesh is realized by vertical lacing wire 6.
In the present embodiment, the setting of top plate 1 is directly to transmit the power of bridge bearing because top plate 1 is as Force transmission parts
To the middle part of UHPC floorings 8, make 8 floorings stress of UHPC floorings more evenly；In addition, top plate 1 is embedded in UHPC floorings 8
In, so that having cohesive force between top plate 1 and UHPC floorings 8, it is convenient for Transfer of Shear；Secondly, UHPC floorings 8 have well
Impermeability, prevent top plate 1 corrode, improve structure durability.
In the present embodiment, steel mesh 4 and lower steel mesh 5, first in setting, steel mesh are arranged upper with UHPC floorings 8
At lower surface, the cracking of UHPC floorings 8 can be prevented；Second, the setting of steel mesh improve the bending resistance of UHPC floorings 8,
Shear-carrying capacity, third are the layings for the ease of vertical lacing wire 6, so that the upper and lower side bending of vertical lacing wire 6 is hooked on steel
Between muscle net 4 and lower steel mesh 5, steel mesh plays the role of fixed lacing wire, and plays Transfer of Shear convenient for vertical lacing wire 6
Effect；4th, be because UHPC floorings 8 upper and lower surface stress it is big, it is right respectively by upper steel mesh 4 and lower steel mesh 5
The stress of the upper and lower surfaces of UHPC floorings 8 is carried, and UHPC floorings 8 is on the one hand effectively prevent to crack, and is prevented
Fracture propagation；On the other hand, 8 anti-bending bearing capacity of UHPC floorings can effectively be increased.
In the present embodiment, the end template 11 in the steel beam structure top 1 bottom surface spacing be 6cm~
10cm。
In the present embodiment, the end template 11 spacing of the bottom surface at top 1 in the steel beam structure is set and is not less than
6cm, first be because it is contemplated that the thickness of the lower steel mesh 5, stretch out the lower steel mesh 5 concrete thickness, lower reinforcing bar
The diameter of spacing and vertical lacing wire 6 between 1 bottom of net 5 and top plate；Second is to consider two neighboring lateral steel beam structure
Between spacing, spacing is related to the lateral stressed size of UHPC floorings 8, so that it is guaranteed that UHPC floorings 8 have it is anti-enough
Curved, shear-carrying capacity；Third is the installation for the ease of lower cushion block, convenient for lower steel mesh 5 is fixed；4th, it is to avoid
Spacing between upper steel mesh 4 and lower steel mesh 5 increases and increases the thickness of UHPC floorings 8.Be arranged the end template 11 away from
Spacing from the bottom surface of top plate 1 in the steel beam structure is not more than 10cm, is because it is contemplated that in UHPC floorings 8 to lower steel mesh
5 meet the protective effect to upper steel mesh 4 while shielding；It in addition is avoided between steel mesh 4 and lower steel mesh 5
Spacing it is small, cannot effectively increase the bearing capacity of UHPC floorings 8.
In the present embodiment, spacing between 8 bottom surface of lower steel mesh 5 and UHPC floorings is 1cm~2cm, be because if
Spacing between 8 bottom surface of lower steel mesh 5 and UHPC floorings is less than 1cm, when 8 bottom surface of UHPC floorings generates crack, is easy
The corrosion for causing lower steel mesh 5 destroys the structure of lower steel mesh 5, cannot be effectively in conjunction with concrete；In addition, lower steel mesh 5
Corrosion product be easy concrete is caused to squeeze so that concrete cover can crack, rise drum, peel off；If lower steel mesh 5
Spacing between 8 bottom surface of UHPC floorings is greater than 2cm, and the surface distance of steel mesh distance UHPC floorings is big, cannot be effective
Ground prevents 8 lower surface of UHPC floorings from cracking, while poor to the reinforcing effect of 8 anti-bending bearing capacity of UHPC floorings.
In the present embodiment, spacing between 8 top surface of upper steel mesh 4 and UHPC floorings is 1cm~3cm, be because if
Spacing between 8 top surface of upper steel mesh 4 and UHPC floorings is less than 1cm, when 8 surface of UHPC floorings generates crack, is easy
The corrosion of steel mesh 4 in initiation, the combination of steel mesh 4 and concrete in destruction；In addition, the corrosion product of upper steel mesh 4 is easy
Concrete is caused to squeeze, so that concrete cover can crack, play drum, peel off；If upper steel mesh 4 and UHPC floorings 8
Spacing between top surface is greater than 3cm, and the surface distance of steel mesh distance UHPC floorings is big, cannot be effectively prevented UHPC bridge floor
8 upper surface of plate cracking, at the same it is poor to the reinforcing effect of 8 anti-bending bearing capacity of UHPC floorings；In addition, upper steel mesh 4 and lower reinforcing bar
The structure of net 5 destroys the stability that will cause vertical 6 structure of lacing wire.
In the present embodiment, setting UHPC floorings 8 with a thickness of 15cm~20cm, be because if UHPC floorings 8
Thickness is too small cannot to be reasonably resistant to automobile load, and safety coefficient is low, and bridge floor is easy to cause to crack；In addition, cannot effectively really
The upper steel mesh 4 of UHPC floorings 8 and the protective layer thickness of lower steel mesh 5 are protected, it can not be effectively to upper steel mesh 4 and lower steel
Muscle net 5 is protected；In addition it cannot be effectively combined with upper steel mesh 4 and lower steel mesh 5, improve the bonding between it
Power；If the thickness of UHPC floorings 8 is excessive, the self weight of floorings is larger, on the one hand brings difficulty to the construction of shuttering supporting；
The self weight of another aspect floorings counteracts the bearing capacity of floorings, cannot effectively bearing automobile load, reduce bridge
Bearing capacity；In addition, floorings stretch out upper steel mesh 4 and the thickness of lower steel mesh 5 is larger, it is not easy to steel mesh 4 and lower reinforcing bar
Net 5 effectively bears the power of 8 upper and lower surface of UHPC floorings, reduces bridge bearing.
In conclusion the steel reinforced concrete combination beam detail design of the utility model weldless connection part is reasonable and puts into construction cost
Lower, the steel reinforced concrete combination beam quality of weldless connection part is easy to guarantee, and construction speed is fast, using steel beam structure and concrete
It combines and constructs, and without welding shear connector on steel beam structure, reduce a large amount of weld job, more environmentally friendly,
Economic performance is more excellent；And construction bridges quality is easy to guarantee, effectively improves quality of finished bridge, reduces difficulty of construction.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all
According to any simple modification to the above embodiments of the utility model technical spirit, change and equivalent structural changes, still
Belong in the protection scope of technical solutions of the utility model.
Claims (6)
1. a kind of steel reinforced concrete combination beam of weldless connection part, it is characterised in that: including multiple along bridge longitudinal extent direction
The structure of the bridge subsection laid from front to back, multiple bridge subsections is all the same, and each bridge subsection includes cloth
It the steel beam structure that is located on institute's construction bridges bridge pier, the steel mesh mechanism being arranged on the steel beam structure and is set to described
UHPC floorings (8) on steel beam structure and the steel mesh mechanism；
The steel beam structure includes bottom plate (3), top plate (1) and the web (2) being connected between bottom plate (3) and top plate (1), described
Steel mesh mechanism is arranged on top plate (1), and the steel mesh mechanism and top plate (1) are coated in the UHPC floorings (8)
Portion, the steel mesh mechanism include the upper steel mesh mechanism being symmetricly set on top plate (1) up and down and lower steel mesh mechanism and company
The vertical lacing wire (6) being connected between the upper steel mesh mechanism and the lower steel mesh mechanism, the upper steel mesh mechanism include
One upper steel mesh (4), the lower steel mesh mechanism includes two lower steel meshes (5) for being symmetricly set on web (2) two sides, institute
State and be hooked between steel mesh (4) and lower steel mesh (5) vertical lacing wire (6), the bending of the top of the vertical lacing wire (6) with it is upper
Steel mesh (4) is fixedly connected, and the lower part bending of the vertical lacing wire (6) is fixedly connected with lower steel mesh (5), two lower steel
It is fixedly connected, is provided on the top plate (1) perforative vertical for vertical lacing wire (6) by lateral lacing wire (7) between muscle net (5)
Mounting hole (9) is provided with for lateral lacing wire (7) perforative lateral mounting hole (10) on the web (2).
2. a kind of steel reinforced concrete combination beam of weldless connection part described in accordance with the claim 1, it is characterised in that: the vertical installation
The quantity in hole (9) is multiple, multiple vertical mounting holes (9) laying triangular in shape.
3. a kind of steel reinforced concrete combination beam of weldless connection part described in accordance with the claim 1, it is characterised in that: the upper steel mesh
(4) and lower steel mesh (5) includes that multiple rows of transverse steel equidistantly laid and multiple row are equidistantly laid in the transverse steel
On longitudinal reinforcement, the spacing between spacing and the two neighboring longitudinal reinforcement between the two neighboring transverse steel is equal
For 8cm~20cm.
4. a kind of steel reinforced concrete combination beam of weldless connection part described in accordance with the claim 1, it is characterised in that: the vertical installation
Hole (9) is slotted eye, and the long axis direction of the slotted eye is laid along the length direction of top plate (1), the slotted eye
Long axis is greater than wider direction length after vertical lacing wire (6) crotch.
5. a kind of steel reinforced concrete combination beam of weldless connection part described in accordance with the claim 1, it is characterised in that: the top plate (1)
Upper surface and upper steel mesh (4) between be provided with cushion block.
6. a kind of steel reinforced concrete combination beam of weldless connection part described in accordance with the claim 1, it is characterised in that: described to be transversely mounted
Hole (10) is round hole, and the diameter of the round hole is greater than the diameter of the lateral lacing wire (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822009891.3U CN209292901U (en) | 2018-11-30 | 2018-11-30 | A kind of steel reinforced concrete combination beam of weldless connection part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822009891.3U CN209292901U (en) | 2018-11-30 | 2018-11-30 | A kind of steel reinforced concrete combination beam of weldless connection part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209292901U true CN209292901U (en) | 2019-08-23 |
Family
ID=67656873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822009891.3U Expired - Fee Related CN209292901U (en) | 2018-11-30 | 2018-11-30 | A kind of steel reinforced concrete combination beam of weldless connection part |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109338899A (en) * | 2018-11-30 | 2019-02-15 | 西安科技大学 | A kind of the steel reinforced concrete combination beam and its construction method of weldless connection part |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109338899A (en) * | 2018-11-30 | 2019-02-15 | 西安科技大学 | A kind of the steel reinforced concrete combination beam and its construction method of weldless connection part |
| CN109338899B (en) * | 2018-11-30 | 2023-06-09 | 西安科技大学 | Steel-concrete composite beam without welding connector and construction method thereof |
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